Duke Nukem 3D is a first-person shooter video game developed by 3D Realms. Duke Nukem 3D features the adventures of the titular Duke Nukem, voiced by Jon St. John, who fights against an alien invasion on Earth. Along with Wolfenstein 3D and Doom, Duke Nukem 3D is considered to be one of many titles responsible for popularizing first-person shooters, and was released to major acclaim. Reviewers praised the interactivity of the environments, gameplay, level design, and unique risqué humor, a mix of pop-culture satire and lampooning of over-the-top Hollywood action heroes. However, it also incited controversy due to its violence, erotic elements, and portrayal of women. Duke Nukem 3D is set on Earth "sometime in the early 21st century". The levels of Duke Nukem 3D take players outdoors and indoors through rendered street scenes, military bases, deserts, a flooded city, space stations, Moon bases, and a Japanese restaurant. The game contains several humorous references to pop culture. Some of Duke's lines are drawn from movies such as Aliens, Dirty Harry, Evil Dead II, Full Metal Jacket, Jaws, Pulp Fiction, and They Live;[6] the captured women saying "Kill me" is a reference to Aliens. Players will encounter corpses of famous characters such as Luke Skywalker, Indiana Jones, Snake Plissken, the protagonist of Doom, and a smashed T-800. In the first episode, players navigate a tunnel in the wall of a prison cell hidden behind a poster, just like in The Shawshank Redemption. During the second episode, players can see a Monolith (from 2001: A Space Odyssey) on the Moon. This is the Atomic Edition CD version (version 1.5), including all 4 major levels, a CD audio track, a map editor and various additional resources. Non-hardcore Duke Nukem fans recommend other small form factor hard drives.